:root {
  --bg: #f4f5f9;
  --card: #ffffff;
  --text: #1d2130;
  --muted: #6b7185;
  --border: #e2e5ee;
  --accent: #5b5bd6;
  --accent-soft: #e8e8fb;
  --good: #1f9d63;
  --good-soft: #dcf5e9;
  --bad: #d64545;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12141c;
    --card: #1c1f2b;
    --text: #e9ebf3;
    --muted: #979cb0;
    --border: #2d3142;
    --accent: #8c8cf5;
    --accent-soft: #2a2b4f;
    --good: #3ccf8e;
    --good-soft: #17392b;
    --bad: #f06a6a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 16px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.logo { font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
nav { display: flex; gap: 4px; }

main { max-width: 1100px; margin: 0 auto; padding: 16px; }

h2 { margin: 0 0 12px; font-size: 1.1rem; display: flex; align-items: center; gap: 8px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid2 > .card { margin-bottom: 0; }
.grid2.wide-left { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
@media (max-width: 760px) {
  .grid2, .grid2.wide-left { grid-template-columns: 1fr; }
}

label { display: block; margin-bottom: 12px; font-weight: 500; }
label.check { display: flex; gap: 8px; align-items: center; font-weight: 400; }

input, select, button {
  font: inherit;
  color: inherit;
}

input:not([type]), input[type="text"], select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
}

button {
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  cursor: pointer;
}
button:hover { border-color: var(--accent); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button.big { width: 100%; padding: 13px; font-size: 1.05rem; }
button.link { border: none; background: none; color: var(--muted); white-space: nowrap; padding: 9px 8px; }
button.link.active { color: var(--accent); font-weight: 600; }
button.small { padding: 4px 9px; font-size: .85rem; }
button.danger { color: var(--bad); }

.row { display: flex; gap: 8px; }
.row input { margin-top: 0; flex: 1; }

.muted { color: var(--muted); font-size: .92rem; }
.center { text-align: center; }

.badge {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 1px 9px;
  font-size: .85rem;
}

.lobby-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.head-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.code { font-size: 2rem; font-weight: 800; letter-spacing: .2em; font-family: ui-monospace, monospace; }

ul.fields, ul.players, ol.winners { list-style: none; margin: 12px 0 0; padding: 0; }
ul.fields li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
}
ul.fields .text { flex: 1; min-width: 0; overflow-wrap: anywhere; }
ul.fields .author { color: var(--muted); font-size: .8rem; display: block; }
.vote { white-space: nowrap; }
.vote.on { background: #fde8e8; border-color: var(--bad); color: var(--bad); }
@media (prefers-color-scheme: dark) { .vote.on { background: #3a1d1d; } }

ul.players li { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; gap: 8px; }
ul.players .offline { opacity: .45; }
ol.winners li { padding: 6px 0; font-weight: 600; }

.side > .card:last-child { margin-bottom: 0; }

/* Bingo-Feld */
.board {
  display: grid;
  gap: 6px;
  max-width: 640px;
  margin: 0 auto 8px;
}
.cell {
  position: relative;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  text-align: center;
  font-size: clamp(.62rem, 1.9vw, .95rem);
  line-height: 1.2;
  overflow-wrap: anywhere;
  hyphens: auto;
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 10px;
  user-select: none;
  transition: transform .08s, background .15s;
}
.cell:active { transform: scale(.96); }
.cell.marked { background: var(--good-soft); border-color: var(--good); font-weight: 600; }
.cell.marked::after {
  content: "✕";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.2em;
  color: var(--good);
  opacity: .18;
  pointer-events: none;
}
.cell.free { background: var(--accent-soft); border-color: var(--accent); font-weight: 700; cursor: default; }

.teacher .phrases { list-style: none; padding: 0; margin: 12px 0; }
.teacher .phrases li { display: flex; justify-content: space-between; gap: 8px; padding: 6px 0; border-top: 1px solid var(--border); }
.teacher-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  max-width: calc(100% - 32px);
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: 10px;
  z-index: 20;
  box-shadow: 0 6px 24px rgba(0,0,0,.25);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 30, .55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 30;
  padding: 16px;
}
.overlay-box {
  background: var(--card);
  border-radius: 20px;
  padding: 28px 36px;
  text-align: center;
  animation: pop .35s ease-out;
}
.overlay-title { font-size: 3rem; font-weight: 900; color: var(--accent); letter-spacing: .05em; }
@keyframes pop { from { transform: scale(.6); opacity: 0; } to { transform: scale(1); opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .overlay-box { animation: none; } }

[hidden] { display: none !important; }

/* Bestenliste */
.table-wrap { overflow-x: auto; }
table.leaderboard { width: 100%; border-collapse: collapse; margin-top: 8px; }
.leaderboard th, .leaderboard td { padding: 9px 8px; text-align: left; border-top: 1px solid var(--border); }
.leaderboard th { color: var(--muted); font-weight: 500; font-size: .9rem; border-top: none; }
.leaderboard .num { text-align: right; font-variant-numeric: tabular-nums; }
.leaderboard th:nth-child(n+3) { text-align: right; }
.leaderboard tr.me td { background: var(--accent-soft); font-weight: 600; }